Dynamic channel sizing in a wireless communication network

ABSTRACT

A wireless communication network serves User Equipment (UEs) over Multiple Input Multiple Output (MIMO) layers. A primary access node wirelessly serves the UEs over a primary amount of MIMO layers in a primary radio channel having a primary channel size. A secondary access node wirelessly serves the UEs over a secondary amount of MIMO layers in a secondary radio channel having a secondary channel size. The primary access node selects a new primary channel size and a new secondary channel size based on the primary amount of MIMO layers and the secondary amount of MIMO layers. The primary access node wirelessly serves the UEs over the primary amount of MIMO layers in the primary radio channel having the new primary channel size. The secondary access node wirelessly serves the UEs over the secondary amount of MIMO layers in the secondary radio channel having the new secondary channel size.

RELATED CASES

This United States patent application is a continuation of U.S. patentapplication Ser. No. 17/030,184 that was filed on Sep. 23, 2020 and isentitled “DYNAMIC CHANNEL SIZING IN A WIRELESS COMMUNICATION NETWORK.”U.S. patent application Ser. No. 17/030,184 is hereby incorporated byreference into this United States patent application.

TECHNICAL BACKGROUND

Wireless communication networks provide wireless data services towireless user devices. Exemplary wireless data services includemachine-control, internet-access, media-streaming, andsocial-networking. Exemplary wireless user devices comprise phones,computers, vehicles, robots, and sensors. The wireless communicationnetworks have wireless access nodes which exchange wireless signals withthe wireless user devices using wireless network protocols. Exemplarywireless network protocols include Fifth Generation New Radio (5GNR),Millimeter Wave (MMW), Long Term Evolution (LTE), Institute ofElectrical and Electronic Engineers (IEEE) 802.11 (WIFI), and Low-PowerWide Area Network (LP-WAN).

The wireless user devices and the wireless access nodes communicate overelectromagnetic spectrum that is separated into various radio bands.Typical radio bands are hundreds of megahertz wide. The radio bands areseparated into radio channels. Typical radio channels are 20-100megahertz wide. Adjacent wireless access nodes often use the same radioband, but the adjacent wireless access nodes use different radiochannels to avoid interference. For example, a wireless access node mayuse first channel for the uplink, another channel for the downlink, andthe adjacent wireless access nodes would use other channels.

Some wireless use devices have multiple radios to wirelessly communicatewith the wireless communication networks. The multi-radio user devicescan wirelessly communicate in parallel with multiple wireless accessnodes. Unfortunately, the wireless access nodes that serve themulti-radio wireless user devices do not efficiently and effectivelyshare channel bandwidth. Moreover, these wireless access nodes do notproperly optimize channel sizes based on dynamic network conditions.

TECHNICAL OVERVIEW

A wireless communication network serves User Equipment (UEs) overMultiple Input Multiple Output (MIMO) layers. A primary access nodewirelessly serves the UEs over a primary amount of the MIMO layers in aprimary radio channel having a primary channel size. A secondary accessnode wirelessly serves the UEs over a secondary amount of the MIMOlayers in a secondary radio channel having a secondary channel size. Thesecondary node indicates the secondary amount of the MIMO layers to theprimary access node. The primary access node selects a new primarychannel size and a new secondary channel size based on the primaryamount of the MIMO layers and the secondary amount of the MIMO layers.The primary access node indicates the new secondary channel size to thesecondary access node. The primary access node wirelessly serves the UEsover the primary amount of the MIMO layers in the primary radio channelhaving the new primary channel size. The secondary access nodewirelessly serves the UEs over the secondary amount of the MIMO layersin the secondary radio channel having the new secondary channel size.

DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a wireless communication network to serve UserEquipment (UEs) over dynamically sized radio channels.

FIG. 2 illustrates an exemplary operation of the wireless communicationnetwork to serve the UEs over the dynamically sized radio channels.

FIG. 3 illustrates an exemplary operation of the wireless communicationnetwork to serve the UEs over the dynamically sized radio channels.

FIG. 4 illustrates a Fifth Generation (5G) communication network havinga Fifth Generation New Radio (5GNR) gNodeBs to serve 5GNR UEs overdynamically sized radio channels.

FIG. 5 illustrates one of the 5GNR UEs that is served by the 5GNRgNodeBs over dynamically sized radio channels.

FIG. 6 illustrates a 5G Core (5GC) Network Function VirtualizationInfrastructure (NFVI) to serve the 5GNR UEs over the 5GNR gNodeBs thatdynamically size radio channels.

FIG. 7 illustrates an exemplary operation of the 5G communicationnetwork to serve one of the 5GNR UEs over the dynamically sized radiochannels.

FIG. 8 illustrates an exemplary operation of the 5GNR gNodeBs to servethe 5GNR UEs over the dynamically sized radio channels.

DETAILED DESCRIPTION

FIG. 1 illustrates a wireless communication network 100 to serve UserEquipment (UEs) 101-103 over dynamically sized radio channels 111-112.Wireless communication network 100 delivers wireless data services likeinternet-access, video-calling, media-streaming, augmented-reality,machine-control, and/or some other wireless networking product. Wirelesscommunication network 100 comprises wireless UEs 101-103, primarywireless access node 121, secondary wireless access node 122, andnetwork elements 130. Wireless access nodes 121-122 are coupled tonetwork elements 130 over backhaul links 113. Network elements 130 arecoupled to external systems over external links 114. The amount of UEsthat are depicted on FIG. 1 has been restricted for clarity, and accessnodes 121-122 typically serve many more UEs in the manner of UE 101-103.

Various examples of network operation and configuration are describedherein. In some examples, primary access node 121 wirelessly serves UEs101-103 over primary radio channel 111 that has a primary channel sizeand that experiences primary uplink interference. Secondary access node122 wirelessly serves UEs 101-103 over secondary radio channel 112 thathas a secondary channel size and that experiences primary uplinkinterference. Primary access node 121 determines the primary uplinkinterference on primary radio channel 111 at primary access node 121.Secondary access node 122 determines the secondary uplink interferenceon secondary radio channel 112 at secondary access node 122. Secondaryaccess node 122 indicates the secondary uplink interference to primaryaccess node 121.

Primary access node 121 processes the primary uplink interference andthe secondary uplink interference to responsively select a new primarychannel size and a new secondary channel size. Primary access node 121increases the primary channel size and correspondingly decreases thesecondary channel size when the primary uplink interference is low andthe secondary uplink interference is high. Primary access node 121decreases the primary channel size and correspondingly increases thesecondary channel size when the primary uplink interference is high andthe secondary uplink interference is low. Primary access node 121indicates the new secondary channel size to secondary access node 122.Primary access node 121 wirelessly serves UEs 101-103 over primary radiochannel 111 that now has the new primary channel size. Secondary accessnode 122 wirelessly serves UEs 101-103 over secondary radio channel 112that now has the new secondary channel size.

In some examples, access nodes 121-122 and UEs 101-103 use MultipleInput Multiple Output (MIMO) layers. The MIMO layers comprise parallelwireless links that share time and frequency resources—like sharing thesame resource block. The same UE may use all of the MIMO layers, ormultiple UEs may each use their own subset of the MIMO layers. Primaryaccess node 121 wirelessly serves UEs 101-103 over primary radio channel111 using a number of primary MIMO layers. Secondary access node 122wirelessly serves UEs 101-103 over secondary radio channel 112 using anumber of secondary MIMO layers. Secondary access node 122 indicates itsamount of the secondary MIMO layers to primary access node 121. Primaryaccess node 121 can then process the amount of primary and secondaryMIMO layers along with the uplink interference to select the new channelsizes.

UEs 101-103 wirelessly communicate with access nodes 121-122 over radiochannels 111-112 using Radio Access Technologies (RATs) like FifthGeneration New Radio (5GNR), Millimeter Wave (MMW), Long Term Evolution(LTE), Institute of Electrical and Electronic Engineers (IEEE) 802.11(WIFI), Low-Power Wide Area Network (LP-WAN), and/or some other wirelessprotocol. The RATs use electromagnetic frequencies in the low-band,mid-band, high-band, or some other portion of the electromagneticspectrum. Links 113-114 use metal, glass, air, or some other media.Links 113-114 use IEEE 802.3 (Ethernet), Time Division Multiplex (TDM),Data Over Cable System Interface Specification (DOCSIS), InternetProtocol (IP), 5GC, 5GNR, LTE, WIFI, virtual switching, inter-processorcommunication, bus interfaces, and/or some other data communicationprotocols.

Although UEs 101-103 are depicted as smartphones, UEs 101-103 mightinstead comprise computers, robots, vehicles, or some other dataappliances with wireless communication circuitry. Access nodes 121-122are depicted as towers, but access nodes 121-122 may use other mountingstructures or no mounting structure at all. Access nodes 121-122 maycomprise gNodeBs, eNodeBs, MMW hot-spots, LP-WAN base stations, and/orsome other form of wireless network transceiver. Network elements 130comprise Access and Mobility Management Functions (AMFs), User PlaneFunctions (UPFs), MMW controllers, Mobility Management Entities (MMEs),Gateways (GWs), Internet-of-Things (IoT) servers, Internet ProtocolMultimedia Subsystem (IMS) servers, and/or some other form of wirelessnetwork apparatus. In some examples, network elements 130 compriseVirtual Network Functions (VNFs) in a Network Function VirtualizationInfrastructure (NFVI).

UEs 101-103 and access nodes 121-122 comprise antennas, amplifiers,filters, modulation, and analog/digital interfaces. UEs 101-103, accessnodes 121-122, and network elements 130 comprise microprocessors,software, memories, transceivers, bus circuitry, and the like. Themicroprocessors comprise Digital Signal Processors (DSP), CentralProcessing Units (CPU), Graphical Processing Units (GPU),Application-Specific Integrated Circuits (ASIC), and/or the like. Thememories comprise Random Access Memory (RAM), flash circuitry, diskdrives, and/or the like. The memories store software like operatingsystems, user applications, radio applications, and networkapplications. The microprocessors retrieve the software from thememories and execute the software to drive the operation of wirelesscommunication network 100 as described herein.

FIG. 2 illustrates an exemplary operation of wireless communicationnetwork 100 to serve UEs 101-103 over dynamically sized radio channels111-112. The operation may vary in other examples. In this example,primary access node 121 wirelessly serves UEs 101-103 over primary radiochannel 111 having an initial primary channel size (201). Secondaryaccess node 122 wirelessly serves UEs 101-103 over secondary radiochannel 112 having an initial secondary channel size (202). Primaryaccess node 121 determines the primary uplink interference on primaryradio channel 111 at primary access node 121 (203). Secondary accessnode 122 determines secondary uplink interference on secondary radiochannel 112 at secondary access node 122 and indicates the secondaryuplink interference to primary access node 121 (204). Primary accessnode 121 processes the primary uplink interference and the secondaryuplink interference to select a new primary channel size and a newsecondary channel size (205). Primary access node 121 typicallyre-allocates a block of channel bandwidth from one access node to theother—like moving a five megahertz block from the primary radio channelto the secondary radio channel. Primary access node 121 indicates thenew secondary channel size to secondary access node 122 (206). Primaryaccess node 121 wirelessly serves UEs 101-103 over primary radio channel111 now having the new primary channel size (207). Secondary access node122 wirelessly serves UEs 101-103 over secondary radio channel 112 nowhaving the new secondary channel size (208). The operation repeats(203).

FIG. 3 illustrates an exemplary operation of wireless communicationnetwork 100 to serve UEs 101-103 over dynamically sized radio channels111-112. The operation may vary in other examples. In this example,primary access node 121 wirelessly exchanges user data with UEs 101-103over primary radio channel 111 that has an initial primary channel sizeand an initial number of primary Multiple Input Multiple Output (MIMO)layers. Primary access node 121 exchanges the user data with networkelements 130, and network elements 130 exchange at least some of theuser data with external systems. Secondary access node 122 wirelesslyexchanges user data with UEs 101-103 over secondary radio channel 112that has an initial secondary channel size and an initial number ofsecondary MIMO layers. Primary access node 121 exchanges the user datawith network elements 130, and network elements 130 exchange at leastsome of the user data with external systems.

Primary access node 121 determines the primary uplink interference onprimary radio channel 111. Secondary access node 122 determinessecondary uplink interference on secondary radio channel 112. Forexample, access nodes 121-122 may detect the uplink noise rise at theirantennas. Secondary access node 122 indicates the secondary uplinkinterference and the secondary amount of MIMO layers to primary accessnode 121. Primary access node 121 processes the amounts of uplinkinterference and MIMO layers to select a new primary channel size and anew secondary channel size. Primary access node 121 indicates the newsecondary channel size to secondary access node 122.

Primary access node 121 wirelessly exchanges user data with UEs 101-103over primary radio channel 111 that now has the new primary channelsize. Primary access node 121 typically uses the same number of primaryMIMO layers as before. Primary access node 121 exchanges the user datawith network elements 130 which exchange at least some of the user datawith external systems. Secondary access node 122 wirelessly exchangesuser data with UEs 101-103 over secondary radio channel 112 that now hasthe new secondary channel size. Secondary access node 112 typically usesthe same number of secondary MIMO layers as before. Secondary accessnode 122 exchanges the user data with network elements 130 whichexchange at least some of the user data with external systems.

FIG. 4 illustrates Fifth Generation (5G) communication 400 networkhaving Fifth Generation New Radio (5GNR) gNodeBs 421-422 to serve 5GNRUEs 401 over dynamically sized radio channels. 5G communication network400 comprises an example of wireless communication network 100, althoughnetwork 100 may differ. 5G communication network 400 comprises UEs 401,5GNR gNodeBs 421-422, and Network Function Virtualization Infrastructure(NFVI) 430. 5GNR gNodeBs 421-422 comprises an example of access nodes121-122, although access nodes 121-122 may differ. 5GNR gNodeB 421comprises 5GNR radio 402 and 5GNR Baseband Unit (BBU) 403. 5GNR radio402 comprises antennas, amplifiers, filters, modulation,analog-to-digital interfaces, DSP, memory, and transceivers that arecoupled over bus circuitry. 5GNR BBU 403 comprises memory, CPU, andtransceivers that are coupled over bus circuitry. The memory in 5GNR BBU403 stores an operating system and 5GNR network applications likePhysical Layer (PHY), Media Access Control (MAC), Radio Link Control(RLC), Packet Data Convergence Protocol (PDCP), Service AdaptationApplication Protocol (SDAP), and Radio Resource Control (RRC).

UEs 401 are wirelessly coupled to the antennas in 5GNR radio 402 overtwo primary MIMO layers in a primary radio channel that has a primarychannel size. Transceivers in 5GNR radio 402 are coupled to transceiversin 5GNR BBU 403 over enhanced CPRI (eCPRI) links. Transceivers in 5GNRBBU 403 are coupled to NFVI 430 over backhaul links. The CPU in 5GNR BBU403 executes the operating system, PHY, MAC, RLC, PDCP, SDAP, and RRC toexchange 5GNR signaling and data with UEs 401 and to exchange 5G Core(5GC) signaling and user data with NFVI 430 and other NodeBs. 5GNR BBU403 may be physically separated into a Distributed Unit (DU) and aCentralized Unit (CU) that each resemble BBU 403. The CU and DU wouldeach host a portion of the software in BBU 403 and would be coupled overfronthaul links.

In 5GNR radio 402, the antennas receive wireless 5GNR signals from UEs401 that transport uplink 5GNR signaling and data. The wireless 5GNRsignals include uplink 5GNR interference. The antennas transfercorresponding electrical uplink signals through duplexers to theamplifiers. The amplifiers boost the electrical uplink signals forfilters which attenuate unwanted energy. Demodulators down-convert thefiltered uplink signals from their carrier frequency. The analog/digitalinterfaces convert the demodulated analog uplink signals into digitaluplink signals for the DSPs. The DSPs recover uplink 5GNR symbols fromthe uplink digital signals. In 5GNR BBU 403, the CPU executes thenetwork applications to process the uplink 5GNR symbols and recover theuplink 5GNR signaling and the uplink 5GNR data. The network applicationsprocess the uplink 5GNR signaling and downlink Fifth Generation Core(5GC) signaling to generate new uplink 5GC signaling, new downlink 5GNRsignaling, and new X2 signaling. The new downlink 5GNR signalingincludes an information block that indicates the current radio channelsize for 5GNR gNodeB 421. The RRC transfers the new uplink 5GC signalingto NFVI 430 and the X2 signaling to other NodeBs. The SDAP transferscorresponding 5GC data to NFVI 430 and the other NodeBs.

In 5GNR BBU 403, the RRC receives the 5GC signaling from NFVI 430 and X2signaling from the other NodeBs. The SDAP receives 5GC data from NFVI430 and the other NodeBs. The 5GNR network applications process the 5GNRsignaling and data to generate corresponding downlink 5GNR symbols thatcarry the 5GNR signaling and data over a number of MIMO layers. In 5GNRradio 402, the DSP processes the downlink 5GNR symbols to generatecorresponding digital signals for the analog-to-digital interfaces. Theanalog-to-digital interfaces convert the digital signals into analogsignals for modulation. Modulation up-converts the analog signals totheir carrier frequency. The amplifiers boost the modulated signals forthe filters which attenuate unwanted out-of-band energy. The filterstransfer the filtered electrical signals through duplexers to theantennas. The filtered electrical signals drive the antennas to emitcorresponding wireless signals to UEs 401 that transport the downlink5GNR signaling and data over the number of MIMO layers.

RRC functions comprise authentication, security, handover control,status reporting, Quality-of-Service (QoS), network broadcasts andpages, and network selection. SDAP functions comprise QoS marking andflow control. PDCP functions comprise security ciphering, headercompression and decompression, sequence numbering and re-sequencing,de-duplication. RLC functions comprise Automatic Repeat Request (ARQ),sequence numbering and resequencing, segmentation and resegmentation.MAC functions comprise buffer status, power control, channel quality,Hybrid Automatic Repeat Request (HARD), user identification, randomaccess, user scheduling, and QoS. PHY functions comprise packetformation/deformation, windowing/de-windowing,guard-insertion/guard-deletion, parsing/de-parsing, controlinsertion/removal, interleaving/de-interleaving, Forward ErrorCorrection (FEC) encoding/decoding, channel coding/decoding, channelestimation/equalization, and rate matching/de-matching,scrambling/descrambling, modulation mapping/de-mapping, layermapping/de-mapping, precoding, Resource Element (RE) mapping/de-mapping,Fast Fourier Transforms (FFTs)/Inverse FFTs (IFFTs), and DiscreteFourier Transforms (DFTs)/Inverse DFTs (IDFTs).

5GNR gNodeB 422 is generally configured and operates like gNodeB 421.5GNR gNodeB 422 wirelessly broadcasts 5GNR signaling that includes aninformation block that indicates the current radio channel size for 5GNRgNodeB 422. The antennas in the 5GNR radio in 5GNR gNodeB 422 arewirelessly coupled to UEs 401 over four secondary MIMO layers in asecondary radio channel that has a secondary channel size.

5GNR BBU 403 determines primary uplink noise rise on its primary radiochannel. 5GNR BBU 403 determines its average amount of primary MIMOlayers. The 5GNR BBU in 5GNR gNodeB 422 determines secondary uplink noserise on its secondary radio channel and its average amount of secondaryMIMO layers. The uplink noise rise comprises the uplink interferencedivided by the background noise. The 5GNR BBU in 5GNR gNodeB 422indicates the secondary uplink noise rise and the average amount ofsecondary MIMO layers to 5GNR BBU 403 over X2 signaling.

5GNR BBU 403 processes the primary uplink noise rise, secondary uplinknoise rise, primary amount of MIMO layers, and secondary amount of MIMOlayers to select the primary channel size for 5GNR gNodeB 421 and thesecondary channel size for 5GNR gNodeB 422. 5GNR BBU 403 increases theprimary channel size and correspondingly decreases the secondary channelsize in response to: decreasing primary uplink noise rise, increasingsecondary uplink noise rise, increasing primary MIMO layers, anddecreasing secondary MIMO layers. 5GNR BBU 403 decreases the primarychannel size and correspondingly increases the secondary channel size inresponse to: increasing primary uplink noise rise, decreasing secondaryuplink noise rise, decreasing primary MIMO layers, and increasingsecondary MIMO layers. For example, the difference between the primaryand secondary noise rises and the difference between the primary andsecondary layer amounts could be determined, normalized, combined, andthen translated into a new primary channel size and a new secondarychannel size.

5GNR BBU 403 wirelessly broadcasts 5GNR signaling over 5GNR radio 402that indicates the new primary channel size. 5GNR BBU 403 serves UEs 401over 5GNR radio 402 using the new primary channel size and two MIMOlayers. 5GNR BBU 403 indicates the new secondary channel size to the5GNR BBU in 5GNR gNodeB 422 over X2 signaling. The 5GNR BBU in 5GNRgNodeB 422 wirelessly broadcasts 5GNR signaling over its 5GNR radio thatindicates the new secondary channel size. The 5GNR BBU in 5GNR gNodeB422 serves UEs 401 over the 5GNR radio in 5GNR gNodeB 422 using the newsecondary channel size and four MIMO layers.

FIG. 5 illustrates one of 5GNR UEs 401 that is served by 5GNR gNodeBs421-422 over the dynamically sized radio channels. UE 401 comprises anexample of UEs 101-103, although UEs 101-103 may differ. UE 401comprises 5GNR radios 501-502 and user circuitry 503. 5GNR radios501-502 comprises antennas, amplifiers, filters, modulation,analog-to-digital interfaces, DSP, memory, and transceivers that arecoupled over bus circuitry. User circuitry 503 comprises memory, CPU,and transceivers that are coupled over bus circuitry. The memory in usercircuitry 503 stores an operating system, user applications (USER), and5GNR network applications for PHY, MAC, RLC, PDCP, SDAP, and RRC.

The antennas in 5GNR radio 501 are wirelessly coupled to 5GNR gNodeB 421over two MIMO layers in a primary radio channel that has a primarychannel size. The antennas in 5GNR radio 502 are wirelessly coupled to5GNR gNodeB 422 over four MIMO layers in a secondary radio channel thathas a secondary channel size. Transceivers in 5GNR radios 501-502 arecoupled to transceivers in user circuitry 503. A transceiver in usercircuitry 503 is typically coupled to user interfaces like displays,controllers, and memory. The CPU in user circuitry 503 executes theoperating system, PHY, MAC, RLC, PDCP, SDAP, and RRC to exchange 5GNRsignaling and data with 5GNR gNodeBs 421-422 over 5GNR radios 501-502.

In 5GNR radios 501-502, the antennas receive wireless signals from 5GNRgNodeB 420 that transport downlink 5GNR signaling and data. The 5GNRsignaling from 5GNR gNodeB 421 indicates the current primary channelsize for 5GNR gNodeB 421. The 5GNR signaling from 5GNR gNodeB 422indicates the current secondary channel size for 5GNR gNodeB 422. Theantennas transfer corresponding electrical signals through duplexers tothe amplifiers. The amplifiers boost the received signals for filterswhich attenuate unwanted energy. Demodulators down-convert the amplifiedsignals from their carrier frequency. The analog/digital interfacesconvert the demodulated analog signals into digital signals for theDSPs. The DSPs transfer corresponding 5GNR symbols to user circuitry 503over the transceivers. In user circuitry 503, the CPU executes thenetwork applications to process the 5GNR symbols and recover thedownlink 5GNR signaling and data—including processing the various MIMOlayers. The 5GNR network applications receive new uplink signaling anddata from the user applications. The network applications process theuplink user signaling the downlink 5GNR signaling to generate newdownlink user signaling and new uplink 5GNR signaling. The networkapplications transfer the new downlink user signaling and data to theuser applications.

The 5GNR network applications process the new uplink 5GNR signaling anduser data to generate corresponding uplink 5GNR symbols that carry theuplink 5GNR signaling and data. In 5GNR radios 501-502, the DSPs processthe uplink 5GNR symbols to generate corresponding digital signals forthe analog-to-digital interfaces. The analog-to-digital interfacesconvert the digital uplink signals into analog uplink signals formodulation. Modulation up-converts the uplink analog signals to theircarrier frequency. The amplifiers boost the modulated uplink signals forthe filters which attenuate unwanted out-of-band energy. The filterstransfer the filtered uplink signals through duplexers to the antennas.The electrical uplink signals drive the antennas to emit correspondingwireless 5GNR signals to 5GNR NodeBs 421-422 that transport the uplink5GNR signaling and data.

RRC functions comprise authentication, security, handover control,status reporting, QoS, network broadcasts and pages, and networkselection. SDAP functions comprise QoS marking and flow control. PDCPfunctions comprise security ciphering, header compression anddecompression, sequence numbering and re-sequencing, de-duplication. RLCfunctions comprise ARQ, sequence numbering and resequencing,segmentation and resegmentation. MAC functions comprise buffer status,power control, channel quality, HARQ, user identification, randomaccess, user scheduling, and QoS. PHY functions comprise packetformation/deformation, windowing/de-windowing,guard-insertion/guard-deletion, parsing/de-parsing, controlinsertion/removal, interleaving/de-interleaving, FEC encoding/decoding,channel coding/decoding, channel estimation/equalization, and ratematching/de-matching, scrambling/descrambling, modulationmapping/de-mapping, layer mapping/de-mapping, precoding, REmapping/de-mapping, FFTs/IFFTs, and DFTs/IDFTs.

FIG. 6 illustrates 5G Core (5GC) Network Function VirtualizationInfrastructure (NFVI) 430 to serve 5GNR UEs 401 over the 5GNR gNodeBs421-422 that dynamically size radio channels. NFVI 430 comprises anexample of network elements 130, although network elements 130 maydiffer. NFVI 430 comprises NFVI hardware 601, NFVI hardware drivers 602,NFVI operating systems 603, NFVI virtual layer 604, and NFVI VirtualNetwork Functions (VNFs) 605. NFVI hardware 601 comprises NetworkInterface Cards (NIC), CPU, RAM, flash/disk drives, and data switches(SW). NFVI hardware drivers 602 comprise software that is resident inthe NIC, CPU, RAM, DRIVE, and SW. NFVI operating systems 603 comprisekernels, modules, applications, containers, hypervisors, and the like.NFVI virtual layer 604 comprises virtual NICs (vNIC), virtual CPUs(vCPU), virtual RAM (vRAM), virtual Drives (vDRIVE), and virtualSwitches (vSW). NFVI VNFs 605 comprise Access and Mobility ManagementFunctions (AMF), Session Management Functions (SMF), User PlaneFunctions (UPF), Policy Control Functions (PCF), Authentication andSecurity Functions (AUSF), Network Slice Selection Functions (NSSF),User Data Management Functions (UDM), and Application Functions (AF).Other VNFs are typically present but are omitted for clarity. The NICare coupled to 5GNR gNodeBs 421-422 and external systems. NFVI hardware601 executes NFVI hardware drivers 602, NFVI operating systems 603, NFVIvirtual layer 604, and NFVI VNFs 605 to serve UE 401 and other UEs over5GNR gNodeBs 421-422 and other NodeBs. NFVI 430 exchanges user data and5GC signaling with 5GNR gNodeBs 421-422 and other NodeBs to servewireless data services to UEs 401. NFVI 430 exchanges some of the userdata with external systems.

FIG. 7 illustrates an exemplary operation of 5G communication network400 to serve 5GNR UE 401 over the dynamically sized radio channels. Theillustrated operation is exemplary and may vary in other examples. Theprimary 5GNR network applications (RRC, SDAP, PDCP, RLC, MAC, and PHY)that use 5GNR radio 501 and 5GNR gNodeB 421 are shown at the top of UE401. The secondary 5GNR network applications (RRC, SDAP, PDCP, RLC, MAC,and PHY) that use 5GNR radio 502 and 5GNR gNodeB 422 are shown at thebottom of UE 401. The 5GNR RRCs in 5GNR gNodeBs 421-422 wirelesslybroadcast 5GNR information blocks that indicate their radio channelsizes. When the 5GNR RRCs in 5GNR gNodeBs 421-422 dynamically changetheir radio channel sizes, the RRCs wirelessly broadcast 5GNRinformation blocks that indicate the new radio channel sizes.

The primary 5GNR RRC in UE 401 attaches to the 5GNR RRC in 5GNR gNodeB421 and indicates multi-radio capability of UE 401. The 5GNR RRC ingNodeB 421 exchanges 5GC signaling with the AMF in NFVI 430 andindicates the multi-radio capability. The AMF interacts with the AUSFand UDM to authenticate and authorize UE 401 for services using themulti-radio capability. The AMF interacts with the NSSI, SMF, and PCF toselect slices, QoS, network addressing, and the like to deliver thewireless data services to UE 401. The SMF directs a UPF to serve UE 401over 5GNR gNodeB 421. The AMF signals the RRC in 5GNR gNodeB 421 toserve UE 401 per the QoS and network addresses and to direct UE 401 toattach to the RRC in 5GNR gNodeB 422. The RRC in 5GNR gNodeB 421 signalsthe primary RRC in UE 401 indicating the selected slices, services, QoS,network addresses, and additional radio attachment.

The primary RRC in UE 401 directs the secondary RRC in UE 401 to attachto the RRC in 5GNR gNodeB 422. The secondary 5GNR RRC in UE 401 attachesto the 5GNR RRC in 5GNR gNodeB 422 to implement the multi-radiocapability for UR 401. The 5GNR RRC in gNodeB 422 exchanges 5GCsignaling with the AMF in NFVI 430. The AMF interacts with the NSSI,SMF, and PCF to identify the slices, QoS, network addressing, and thelike for UE 401. The SMF directs the UPF to serve UE 401 over 5GNRgNodeB 422. The AMF signals the RRC in 5GNR gNodeB 422 to serve UE 401per the QoS and network addresses. The RRC in 5GNR gNodeB 422 signalsthe secondary RRC in UE 401 indicating the identified slices, services,QoS, and network addresses.

The user applications in UE 401 exchange user signaling with the primaryand secondary RRCs over the operating system and exchange user data withthe SDAPs over the operating system. The primary and secondary RRCs inUE 401 and the RRCs in 5GNR gNodeBs 421-422 exchange 5GNR signaling toestablish the selected services per the QoS. The primary and secondarySDAPs in UE 401 and the SDAPs in 5GNR gNodeBs 421-422 exchange the userdata to deliver the selected services per the QoS. The 5GNR downlinkstwo MIMO layers from 5GNR gNodeB 421 to UE 401 and four MIMO layers from5GNR gNodeB 422 to UE 401. The SDAPs in 5GNR gNodeBs 421-422 and the UPFin NFVI 430 exchange the user data to deliver the selected services perthe QoS. The UPF in NFVI 430 and external systems exchange the user datato deliver the selected services per the QoS.

The primary PHY in UE 401 and the PHY in 5GNR gNodeB 421 are wirelesslycoupled over two primary MIMO layers in a primary radio channel that hasa primary channel size. The secondary PHY in UE 401 and the PHY in 5GNRgNodeB 422 are wirelessly coupled over four secondary MIMO layers in asecondary radio channel that has a secondary channel size. The PHY in5GNR gNodeB 421 determines uplink noise rise on the primary radiochannel. The PHY in 5GNR gNodeB 421 determines its average amount ofprimary MIMO layers. The PHY in 5GNR gNodeB 422 determines uplink noiserise on the secondary radio channel. The PHY in 5GNR gNodeB 422determines its average amount of secondary MIMO layers. The PHY in 5GNRgNodeB 422 indicates the secondary uplink noise rise and MIMO layers tothe PHY in 5GNR gNodeB 421. The PHY in 5GNR gNodeB 421 processes theprimary uplink noise rise, secondary uplink noise rise, primary MIMOlayer amount, and secondary MIMO layer amount to select the primarychannel size and the secondary channel size.

The PHY in 5GNR gNodeB 421 increases the primary channel size andcorrespondingly decreases the secondary channel size in response to:decreasing primary uplink noise rise, increasing secondary uplink noiserise, increasing primary MIMO layers, and decreasing secondary MIMOlayers. The PHY in 5GNR gNodeB 421 decreases the primary channel sizeand correspondingly increases the secondary channel size in response to:increasing primary uplink noise rise, decreasing secondary uplink noiserise, decreasing primary MIMO layers, and increasing secondary MIMOlayers. For example, the difference between the primary and secondarynoise rises and the difference between the primary and secondary layeramounts could be determined, normalized, combined, and then translatedinto a new primary channel size and a new secondary channel size. Thechange in channel size may comprise the allocation of a bandwidth blockfrom one NodeB to the other.

The PHY in 5GNR gNodeB 421 indicates the new primary channel size to theMAC and RRC in gNodeB 421. The RRC in 5GNR gNodeB 421 indicates the newsecondary channel size to the RRC in 5GNR gNodeB 422 which notifies thePHY and MAC in gNodeB 422. The MAC in 5GNR gNodeB 421 responsivelyschedules primary resource blocks for UEs 401 from the primary radiochannel within the new primary channel size. The MAC in 5GNR gNodeB 422schedules secondary resource blocks for UEs 401 from the secondary radiochannel within the new secondary channel size. The RRCs in 5GNR gNodeBs421-422 now broadcast the new channel sizes in their information blocks.

FIG. 8 illustrates an exemplary operation of 5GNR gNodeB 421 to serve5GNR UEs 401 over the dynamically sized radio channels. The top leftgraph depicts the relation of primary uplink noise rise to primarychannel size. The top right graph depicts the relation of secondaryuplink noise rise to secondary channel size. On both top graphs, highnoise rise correlates to small channel size and low noise risecorrelates to large channel size. The bottom left graph depicts therelation of primary MIMO layers to primary channel size. The bottomright graph depicts the relation of secondary MIMO layers rise tosecondary channel size. On both bottom graphs, a high number of MIMOlayers correlates to large channel size and a low number of MIMO layerscorrelates to small channel size. The graphs could be reduced to datastructures that are hosted by 5GNR gNodeB 421.

In some examples, 5GNR gNodeB 421 selects the primary channel size andthe secondary channel size as follows. A total channel size is availablefor 5GNR gNodeBs 421-422. 5GNR gNodeB 421 multiplies the total channelsize by a primary factor to determine the primary channel size. 5GNRgNodeB 421 subtracts the primary channel size from the total channelsize to determine the secondary channel size. The primary factorcomprises the product of an interference factor, MIMO factor, andweighting factors. For example, primary factor=(Total ChannelSize)×[(Weight A)×(Secondary Interference)/(PrimaryInterference)]×[(Weight B)×(Primary MIMO Layers)/(Secondary MIMOLayers)]. Subtraction could replace division to determine theinterference and layer differences in other examples. The Weights A andB could vary by deployment and be optimized through empirical testing.

The wireless data network circuitry described above comprises computerhardware and software that form special-purpose network circuitry todynamically size radio channels while wirelessly serving UEs. Thecomputer hardware comprises processing circuitry like CPUs, DSPs, GPUs,transceivers, bus circuitry, and memory. To form these computer hardwarestructures, semiconductors like silicon or germanium are positively andnegatively doped to form transistors. The doping comprises ions likeboron or phosphorus that are embedded within the semiconductor material.The transistors and other electronic structures like capacitors andresistors are arranged and metallically connected within thesemiconductor to form devices like logic circuitry and storageregisters. The logic circuitry and storage registers are arranged toform larger structures like control units, logic units, andRandom-Access Memory (RAM). In turn, the control units, logic units, andRAM are metallically connected to form CPUs, DSPs, GPUs, transceivers,bus circuitry, and memory.

In the computer hardware, the control units drive data between the RAMand the logic units, and the logic units operate on the data. Thecontrol units also drive interactions with external memory like flashdrives, disk drives, and the like. The computer hardware executesmachine-level software to control and move data by driving machine-levelinputs like voltages and currents to the control units, logic units, andRAM. The machine-level software is typically compiled from higher-levelsoftware programs. The higher-level software programs comprise operatingsystems, utilities, user applications, and the like. Both thehigher-level software programs and their compiled machine-level softwareare stored in memory and retrieved for compilation and execution. Onpower-up, the computer hardware automatically executesphysically-embedded machine-level software that drives the compilationand execution of the other computer software components which thenassert control. Due to this automated execution, the presence of thehigher-level software in memory physically changes the structure of thecomputer hardware machines into special-purpose network circuitry todynamically size radio channels while wirelessly serving UEs.

The above description and associated figures teach the best mode of theinvention. The following claims specify the scope of the invention. Notethat some aspects of the best mode may not fall within the scope of theinvention as specified by the claims. Those skilled in the art willappreciate that the features described above can be combined in variousways to form multiple variations of the invention. Thus, the inventionis not limited to the specific embodiments described above, but only bythe following claims and their equivalents.

What is claimed is:
 1. A method of operating a wireless communicationnetwork to serve User Equipment (UEs) over Multiple Input MultipleOutput (MIMO) layers, the method comprising: a primary access nodewirelessly serving the UEs over a primary amount of the MIMO layers in aprimary radio channel having an initial primary channel size; asecondary access node wirelessly serving the UEs over a secondary amountof the MIMO layers in a secondary radio channel having an initialsecondary channel size and indicating the secondary amount of the MIMOlayers to the primary access node; the primary access node selecting anew primary channel size and selecting a new secondary channel sizebased on the primary amount of the MIMO layers and the secondary amountof the MIMO layers and indicating the new secondary channel size to thesecondary access node; the primary access node wirelessly serving theUEs over the primary amount of the MIMO layers in the primary radiochannel having the new primary channel size; and the secondary accessnode wirelessly serving the UEs over the secondary amount of the MIMOlayers in the secondary radio channel having the new secondary channelsize.
 2. The method of claim 1 further comprising the primary accessnode determining a layer amount difference between the primary amount ofthe MIMO layers and the secondary amount of the MIMO layers andselecting the new primary channel size and the new secondary channelsize based on the layer amount difference.
 3. The method of claim 1wherein the primary access node selecting the new primary channel sizeand the new secondary channel size comprises moving a bandwidth blockfrom the secondary radio channel to the primary radio channel.
 4. Themethod of claim 1 wherein the primary access node selecting the newprimary channel size and the new secondary channel size comprises movinga bandwidth block from the primary radio channel to the secondary radiochannel.
 5. The method of claim 1 further comprising: the primary accessnode wirelessly broadcasting the initial primary channel size when usingthe initial primary channel size and wirelessly broadcasting the newprimary channel size when using the new primary channel size; and thesecondary access node wirelessly broadcasting the initial secondarychannel size when using the initial secondary channel size andwirelessly broadcasting the new secondary channel size when using thenew secondary channel size.
 6. The method of claim 1 wherein: theprimary access node wirelessly serving the UEs over the primary radiochannel having the new primary channel size comprises a primary MediaAccess Control (MAC) scheduling primary resource blocks for the UEs fromthe primary radio channel within the new primary channel size; and thesecondary access node wirelessly serving the UEs over the secondaryradio channel having the new secondary channel size comprises asecondary MAC scheduling secondary resource blocks for the UEs from thesecondary radio channel within the new secondary channel size.
 7. Themethod of claim 1 further comprising: the primary access nodedetermining primary uplink interference on the primary radio channel atthe primary access node; the secondary access node determining secondaryuplink interference on the secondary radio channel at the secondaryaccess node and indicating the secondary uplink interference to theprimary access node; and wherein the primary access node selecting thenew primary channel size and selecting the new secondary channel sizecomprises selecting the new primary channel size and selecting the newsecondary channel size based on the primary uplink interference, theprimary amount of the MIMO layers, the secondary uplink interference,and the secondary amount of the MIMO layers.
 8. The method of claim 1further comprising: the primary access node determining primary uplinknoise rise on the primary radio channel at the primary access node; thesecondary access node determining secondary uplink noise rise on thesecondary radio channel at the secondary access node and indicating thesecondary uplink noise rise to the primary access node; and wherein theprimary access node selecting the new primary channel size and selectingthe new secondary channel size comprises selecting the new primarychannel size and selecting the new secondary channel size based on theprimary uplink noise rise, the primary amount of the MIMO layers, thesecondary uplink noise rise, and the secondary amount of the MIMOlayers.
 9. The method of claim 1 wherein the primary access nodecomprises a Fifth Generation New Radio (5GNR) gNodeB.
 10. The method ofclaim 1 wherein the secondary access node comprises a Fifth GenerationNew Radio (5GNR) gNodeB.
 11. A wireless communication network to serveUser Equipment (UEs) over Multiple Input Multiple Output (MIMO) layers,the wireless communication network comprising: a primary access nodeconfigured to wirelessly serve the UEs over a primary amount of the MIMOlayers in a primary radio channel having an initial primary channelsize; a secondary access node configured to wirelessly serve the UEsover a secondary amount of the MIMO layers in a secondary radio channelhaving an initial secondary channel size and indicating the secondaryamount of the MIMO layers to the primary access node; the primary accessnode configured to select a new primary channel size and select a newsecondary channel size based on the primary amount of the MIMO layersand the secondary amount of the MIMO layers and indicate the newsecondary channel size to the secondary access node; the primary accessnode configured to wirelessly serve the UEs over the primary amount ofthe MIMO layers in the primary radio channel having the new primarychannel size; and the secondary access node configured to wirelesslyserve the UEs over the secondary amount of the MIMO layers in thesecondary radio channel having the new secondary channel size.
 12. Thewireless communication network of claim 11 wherein the primary accessnode is configured to determine a layer amount difference between theprimary amount of the MIMO layers and the secondary amount of the MIMOlayers and select the new primary channel size and the new secondarychannel size based on the layer amount difference.
 13. The wirelesscommunication network of claim 11 wherein the primary access node isconfigured to move a bandwidth block from the secondary radio channel tothe primary radio channel to select the new primary channel size and thenew secondary channel size.
 14. The wireless communication network ofclaim 11 wherein the primary access node is configured to move abandwidth block from the primary radio channel to the secondary radiochannel to select the new primary channel size and the new secondarychannel size.
 15. The wireless communication network of claim 11 furthercomprising: the primary access node configured to wirelessly broadcastthe initial primary channel size when using the initial primary channelsize and wirelessly broadcast the new primary channel size when usingthe new primary channel size; and the secondary access node configuredto wirelessly broadcast the initial secondary channel size when usingthe initial secondary channel size and wirelessly broadcast the newsecondary channel size when using the new secondary channel size. 16.The wireless communication network of claim 11 wherein: the primaryaccess node comprises a primary Media Access Control (MAC) configured toschedule primary resource blocks for the UEs from the primary radiochannel within the new primary channel size; and the secondary accessnode comprises a secondary MAC configured to schedule secondary resourceblocks for the UEs from the secondary radio channel within the newsecondary channel size.
 17. The wireless communication network of claim11 further comprising: the primary access node configured to determineprimary uplink interference on the primary radio channel at the primaryaccess node; the secondary access node configured to determine secondaryuplink interference on the secondary radio channel at the secondaryaccess node and indicate the secondary uplink interference to theprimary access node; and wherein the primary access node is configuredto select the new primary channel size and select the new secondarychannel size based on the primary uplink interference, the primaryamount of the MIMO layers, the secondary uplink interference, and thesecondary amount of the MIMO layers.
 18. The wireless communicationnetwork of claim 11 further comprising: the primary access nodeconfigured to determine primary uplink noise rise on the primary radiochannel at the primary access node; the secondary access node isconfigured to determine secondary uplink noise rise on the secondaryradio channel at the secondary access node and indicate the secondaryuplink noise rise to the primary access node; and wherein the primaryaccess node is configured to select the new primary channel size andselect the new secondary channel size based on the primary uplink noiserise, the primary amount of the MIMO layers, the secondary uplink noiserise, and the secondary amount of the MIMO layers.
 19. The wirelesscommunication network of claim 11 wherein the primary access nodecomprises a Fifth Generation New Radio (5GNR) gNodeB.
 20. The wirelesscommunication network of claim 11 wherein the secondary access nodecomprises a Fifth Generation New Radio (5GNR) gNodeB.